KeePass not compatible with plug-ins on Ubuntu

Hi there,
I have this error from KeePass on Ubuntu when I want to install a plug-in. On the plugin’s website I have downloaded the version for my program and still is not working. Does anyone have any solution for my problem ? Why is not working ?
Thanks !

KeePass
The following plugin is incompatible with the current KeePass version:
/usr/lib/keepass2/plugins/KeepassHttp.plgx
Have a look at the plugin’s website for an appropriate version.
OK
